1. School of Government, Peking University, 5 Yiheyuan Road, Hai Dian Qu, Beijing 100871, China
2. School of Economics and Management, Harbin Institute of Technology, 92 Xida Street, Nan Gang Qu, Harbin 150001, China
3. Business School, Renmin University of China, 59 Zhongguancun Street, Hai Dian Qu, Beijing 100872, China